| Autor: |
Li-Ming Shao, Jin-Qiu Zhao, Zhi-Guo Xia, Xi-Ping Jing |
| Zdroj: |
Journal of The Electrochemical Society; 2011, Vol. 158 Issue 10, pJ300-J304, 5p |
| Abstrakt: |
Eu2+ or Cr3+ singly doped and Eu2+-Cr3+ co-doped MgSrAl10O17 luminescent materials were synthesized by solid-state reactions and their photoluminescence properties were investigated. These luminescent materials have absorption in the UV-Vis region and give luminescence in the deep-red region (∼693 nm), which are suitably applied in a device of luminescent solar concentrator (LSC) for improving the efficiency of silicon solar cells. In these luminescent materials, Eu2+ located at Sr2+ site can effectively transfer its absorbed energy to Cr3+ at A13+ site. The energy transfer from Eu2+ to Cr3+ takes the dipole-dipole interaction mechanism. The transfer efficiency (ηET) approaches about 0.63 and the optimized quantum efficiency (QE) for Cr3+ emission is about 11%. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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